Quantum Gravity, Generalized Theory of Gravitation, and Superstring Theory-Based Unification PDF Download

Author: Behram N. Kursunogammalu
Publisher: Springer Science & Business Media
ISBN: 0306471043
Category : Science
Languages : en
Pages : 228

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Book Description
Held December 16-19, 1999, these proceedings are derived from the Global Foundation Inc.'s Orbis Scientiae 1999. Topics include: cosmological parameters; unifying elementary particle physics; cosmology; superstrings; and black holes.

Author: Edouard B. Manoukian
Publisher: Springer
ISBN: 3319338528
Category : Science
Languages : en
Pages : 364

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Book Description
This book takes a pedagogical approach to explaining quantum gravity, supersymmetry and string theory in a coherent way. It is aimed at graduate students and researchers in quantum field theory and high-energy physics. The first part of the book introduces quantum gravity, without requiring previous knowledge of general relativity (GR). The necessary geometrical aspects are derived afresh leading to explicit general Lagrangians for gravity, including that of general relativity. The quantum aspect of gravitation, as described by the graviton, is introduced and perturbative quantum GR is discussed. The Schwinger-DeWitt formalism is developed to compute the one-loop contribution to the theory and renormalizability aspects of the perturbative theory are also discussed. This follows by introducing only the very basics of a non-perturbative, background-independent, formulation of quantum gravity, referred to as “loop quantum gravity”, which gives rise to a quantization of space. In the second part the author introduces supersymmetry and its consequences. The generation of superfields is represented in detail. Supersymmetric generalizations of Maxwell’s Theory as well as of Yang-Mills field theory, and of the standard model are worked out. Spontaneous symmetry breaking, improvement of the divergence problem in supersymmetric field theory, and its role in the hierarchy problem are covered. The unification of the fundamental constants in a supersymmetric version of the standard model are then studied. Geometrical aspects necessary to study supergravity are developed culminating in the derivation of its full action. The third part introduces string theory and the analysis of the spectra of the mass (squared) operator associated with the oscillating strings. The properties of the underlying fields, associated with massless particles, encountered in string theory are studied in some detail. Elements of compactification, duality and D-branes are given, as well of the generation of vertices and interactions of strings. In the final sections, the author shows how to recover GR and the Yang-Mills field Theory from string theory.

Author: James B. Glattfelder
Publisher: Springer
ISBN: 3030036332
Category : Science
Languages : en
Pages : 662

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Book Description
This open access book chronicles the rise of a new scientific paradigm offering novel insights into the age-old enigmas of existence. Over 300 years ago, the human mind discovered the machine code of reality: mathematics. By utilizing abstract thought systems, humans began to decode the workings of the cosmos. From this understanding, the current scientific paradigm emerged, ultimately discovering the gift of technology. Today, however, our island of knowledge is surrounded by ever longer shores of ignorance. Science appears to have hit a dead end when confronted with the nature of reality and consciousness. In this fascinating and accessible volume, James Glattfelder explores a radical paradigm shift uncovering the ontology of reality. It is found to be information-theoretic and participatory, yielding a computational and programmable universe.

Author: Jean de Climont
Publisher: Editions d Assailly
ISBN: 2902425171
Category : Science
Languages : en
Pages : 2426

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Book Description
This Worldwide List of Alternative Theories and Critics (only avalailable in english language) includes scientists involved in scientific fields. The 2023 issue of this directory includes the scientists found in the Internet. The scientists of the directory are only those involved in physics (natural philosophy). The list includes 9700 names of scientists (doctors or diplome engineers for more than 70%). Their position is shortly presented together with their proposed alternative theory when applicable. There are nearly 3500 authors of such theories, all amazingly very different from one another. The main categories of theories are presented in an other book of Jean de Climont THE ALTERNATIVE THEORIES

Author: Murat Ukray
Publisher: eKitap Projesi & Cheapest Books
ISBN: 6155565341
Category : Science
Languages : en
Pages : 699

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Book Description
"UKRAY" - UNIFIED FIELD THEORY - - A New Unification Theory on Electromagnetic Gravitation- PREFACE “This study which aims to prove that all forces and laws of physics exist in a single unified structure at the Starting and Ending moment of the Universe analyzes all laws of physics within the framework of a unified structure from Newton Mechanics to Quantum Theory, Einstein Relativity to modern 11-dimensional Super string theory. The study may also be considered as a "MODERN ERA PRINCIPIA" since it was started to be written in about 300 years (early 2007) after the publication of the great study of Newton named "PRINCIPIA" (1703-1707) on the topic of gravity theories. The volume includes SEVEN CHAPTERS in the form of SEVEN different articles which follow each other and make clear the subject when they are read consecutively. In addition, FOUR additional chapters in the form of APPENDIXES in nature of FUNDAMENTALS OF MATHEMATICS were also included at the end of the volume for readers who have a less degree of technical knowledge about the topic... THIS THEORY, GETS THESE QUESTIONS INTO; - A CHANGE into Gravitational field and field equations, STATIC AND UNIVERSAL GRAVITATIONAL CONSTANTS, - THE DYNAMICS OF Gravitational field with Combining the Electromagnetics Theory. - THE VELOCITY OF LIGHT COULD BE EXCEEDED? THIS THEORY WAS PREPARED AS A CONSEQUENCE OF APPROXIMATELY 16 YEARS STUDY, - WHOLE "666" PAGE - INCLUDES ABOUT 100 THEOREMS, - AND 1000 ILLUSTRATED DRAWINGS, - ASSERTS THE NEW PHYSICS OF THE UNIVERSE. AND MUCH MORE... This oriented me to a series of researches to study and create this theory for years and then directed me to create a unified electromagnetic gravity theory composed of SEVEN ARTICLES in total I will submit here in order and step by step. Even though the theory includes a deductive mathematical approach, tensor calculation and geometric modellings, I will give solutions of Einstein-Maxwell Equations with a different mathematical 4x4 Pauli-Dirac Spinors and Tensor calculation construction in direction of closed extra dimension of the space (5 Dimension Effect) What Does the Theory Tell? {Short Abstract and Philosophy of the Theory} The THEORY summarizes the general and simple mathematical description of the universe in the form of general conclusion items and forecasts the followings; Basic Projections of the Theory? - NEW MODEL OF AN ATOM, - NEW MODEL OF THE UNIVERSE, - CHANGE IN GALILEO Inertia Principle, - A Fundamental Change in the Structure of MAXWELL's EQUATIONS, AN ADDITIONAL TERMS AND ADDITIONS, - A CHANGE IN POYNTING ENERGY THEORY, - A NEW ATOMIC MODEL, - A NEW UNIVERSE MODEL, - CHANGE IN GALILEO'S PRINCIPLE OF INERTIA, - A FUNDEMENTAL CHANGE AND AN ADDITIONAL TERM IN THE STRUCTURE IF MAXWELL EQUATIONS, - A CHANGE IN STATIC FIELD EQUATIONS OF THE GRAVITY FIELD AND IN THE UNIVERSAL GRAVITY CONSTANT. - CHANGE IN POYNTING ENERGY THEOREM, - HOW CAN THE VELOCITY OF LIGHT BE EXCEEDED?

Author: Domenico J. W. Giulini
Publisher: Springer Science & Business Media
ISBN: 9783540408109
Category : Science
Languages : en
Pages : 426

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Book Description
The relation between quantum theory and the theory of gravitation remains one of the most outstanding unresolved issues of modern physics. According to general expectation, general relativity as well as quantum (field) theory in a fixed background spacetime cannot be fundamentally correct. Hence there should exist a broader theory comprising both in appropriate limits, i.e., quantum gravity. This book gives readers a comprehensive introduction accessible to interested non-experts to the main issues surrounding the search for quantum gravity. These issues relate to fundamental questions concerning the various formalisms of quantization; specific questions concerning concrete processes, like gravitational collapse or black-hole evaporation; and the all important question concerning the possibility of experimental tests of quantum-gravity effects.

Author: Lawrence B. Crowell
Publisher: World Scientific
ISBN: 9812565159
Category : Science
Languages : en
Pages : 388

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Book Description
Three key aspects of quantum gravity are considered in this book: phenomenology, potential experimental aspects and foundational theory. The phenomenology is the treatment of metric quantum fluctuations as torsional curves that deviate from classical expectations. This leads to possible experimental configurations that may detect such fluctuations. Most of these proposed experiments are quantum optical measurements of subtle quantum gravity effects in the interaction of photons and atoms. The foundational discussions attempt to find an substratum to string theories, which are motivated by the phenomenological treatment. Quantum gravity is not the quantization of general relativity, but is instead the embedding of quantum theory and gravitation into a more fundamental field theoretic framework.

Author: Felix Finster
Publisher: Springer Science & Business Media
ISBN: 3034800436
Category : Mathematics
Languages : en
Pages : 382

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Book Description
One of the most challenging problems of contemporary theoretical physics is the mathematically rigorous construction of a theory which describes gravitation and the other fundamental physical interactions within a common framework. The physical ideas which grew from attempts to develop such a theory require highly advanced mathematical methods and radically new physical concepts. This book presents different approaches to a rigorous unified description of quantum fields and gravity. It contains a carefully selected cross-section of lively discussions which took place in autumn 2010 at the fifth conference "Quantum field theory and gravity - Conceptual and mathematical advances in the search for a unified framework" in Regensburg, Germany. In the tradition of the other proceedings covering this series of conferences, a special feature of this book is the exposition of a wide variety of approaches, with the intention to facilitate a comparison. The book is mainly addressed to mathematicians and physicists who are interested in fundamental questions of mathematical physics. It allows the reader to obtain a broad and up-to-date overview of a fascinating active research area.

Author: Thomas Curtright
Publisher: World Scientific
ISBN: 9814480754
Category : Science
Languages : en
Pages : 460

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Book Description
Recent experimental results with direct bearing on theories of cosmological dark matter/energy, as well as continuing work on neutrino masses and mixing, have invigorated both particle physics and cosmology, and should continue to do so well into the 21st century, thereby launching a beautiful new epoch for these fields. The expert contributions from this conference took stock of these developments. This volume contains papers by over 40 physicists that summarize and interpret the newest findings, and suggest future avenues to be explored. A number of new theoretical ideas are also presented, dealing with progress in understanding the dynamics and symmetries of strings and branes, renormalization in quantum field theory, possible Lorentz violation effects, and related problems. Ongoing and next generation gravitational and neutrino experiments are described, and the issues of unification are dealt with in the context of, and beyond, the standard model. Together, the contributions provide a useful blend of experimental and theoretical physics from many prominent physicists, including three Nobel Laureates. The volume also contains information of an historical nature, concerning the contributions to physics by Paul Frampton, on the occasion of his 60th year, and summarizing the career of Behram Kursunoglu (1922–2003). Contents:Frampton Festschrift Contributions:Glueballs and the Universal Energy Spectrum of Tight Knots and Links (R V Buniy & T W Kephart)Proton Decay, Neutrino Oscillations, etc. … from IMB, Through Super-K & Antares (L R Sulak)Renormalization Without Infinities (G 't Hooft)Problems and Difficulties in Standard Model and Gravitation (M Veltman)Astrophysics and Cosmology:Direct Determinations of the Redshift Behavior of the Pressure, Energy Density, and Equation of State of the Dark Energy and the Acceleration of the Universe (R A Daly & S G Djorgovski)Cosmolgy with Clusters of Galaxies (M Donahue)Pulsar Kicks and Dark Matter from a Sterile Neutrino (A Kusenko)Cosmic Neutrino Physics and Astrophysics (T J Weiler)Lepton Experiments:Limits on the Neutrino Magnetic Moment Using 1496 Days of Super-Kamiokande-I Solar Neutrino Data (D W Liu)Precision Measurement of the Anomalous Magnetic Moment of the Muon (J M Paley)Neutrino Experiments with Super-Kamiokande (M B Smy)Measurement of sin22θ13 by Reactor Experiments and Its Sensitivity (O Yasuda)Neutrino Theory:Neutrinos, Lepton Flavor, and CP Violation in a Predictive SO(10) Model (B Dutta et al.)Tracing Very High Energy Tau Neutrinos from Cosmological Sources in Ice (J Jones et al.)Chasing CHOOZ (P Ramond)Lorentz Violation, Field Theory and Branes:New Implications of Lorentz Violation (D Colladay)Hidden Symmetries in M-Theory (M J Duff)Soft Breaking in SUSY, String, and Intersecting D Brane Models (P Nath)Kursunoglu Memorial Tributes:Memorial Session for Behram Kursunoglu (P Frampton)The Work of Behram Kursunoglu (P D Mannheim)other papers Readership: Graduate students and researchers in physics, astrophysics, particle physics and cosmology, as well as historians of science. Keywords:Particle Physics;Neutrinos;Cosmology;Dark Energy;Dark Matter;Renormalization;Lorentz Violation;Strings and Branes

Author: Behram N. Kursunogammalu
Publisher: Springer Science & Business Media
ISBN: 1461513235
Category : Science
Languages : en
Pages : 226

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Book Description
The first part of the conference explores two major environmental concerns that arise from fuel use: (1) the prospect that the globe will become warmer as a result of emissions of carbon dioxide, and (2) the effect upon health of the fine particles emitted as combustion products. The conference focused on the fact that there was lack of data direct enough to enable us to predict an entirely satisfactory result, and that makes policy options particularly difficult. With regard to (1) above, in the second half of the 20th century there were major increases in anthropogenic C02 emissions, and it is generally agreed that these were responsible for an increase in C02 concentrations. But the relationship between global temperature and CO2 concentrations remains murky. The principal problem is that water vapor is a more important greenhouse gas than C02 and that the concentrations of water vapor vary widely in time and space. The approach to this problem is probably, but not certainly, a positive feedback effect: as temperature increases so does the water vapor leading to further temperature increases. Scientists associated with the Intergovernmental Panel on Climate Change (IPCC) tend to believe the general features of the models. Other scientists are often less convinced.